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Hi, I recently looked into telescope's & dso's again due to an interesting sight in the night sky 😉.
I wanted to get into telescope's etc... but my budget and other things got in the way.
This time there's no budget limit (that doesn't mean I'm bill Gates though).
My main concern is size since I will carry the telescope with my bare hands (bag).
I don't have a local astronomy club or telescope shop around so I don't know if an 8" Newtonian is too bulky/big.
Can someone post comparison pictures, if you have an 8" telescope (preferably newtonian, width and length)?
Secondly I want to see dso's in the future (firstly beginner objects etc...) so the 8" is more adequate than the 6", but if an 8" is too big then I am okay with a 6" as long as it's much more portable.
Helios 8" Newtonian telescope OTA. Equivalent with Skywatcher Explorer 200P.
Has some cosmetic markings, but otherwise in excellent condition.
- 1.25" and 2" eyepiece adapters
- 9x50 finderscope
- long Vixen style dovetail
Price: £130 (negotiable)
Celestron Astromaster Kit is available for £20 extra
Mount not included.
Pick up only in Oxford.
By Anthony RS
Is anyone here using the TS Photon 6" F4 newtonian? I'm about to purchase it but I have some doubts and questions:
1- Does it hold collimation well, at least in a single session?
2- Is it impossible to balance in DEC due to its small dovetail or is it possible but harder?
3- Is the focuser rigid enough or does it introduce tilt?
4- Will collimating it be a nightmare?
5- I'm really picky when it comes to coma, should I expect some coma on edges even while using the Skywatcher Aplanatic F4 CC?
6- All in all, do you advice me to buy it or have some other option in the same price range.
I am looking into making a hobby out of spectroscopy but don't exactly know where to start.
All I can really go off is a high school education of physics and the various reading that one usually does when looking into something new.
The main questions are, essentially;
1. What is the best spectrometry equipment for an amateur like myself?
I have little to no knowledge on all the necessary equipment, so any recommendations would be very much appreciated. For any suggestions, if you wouldn't mind giving a reason as to why you recommend a said product, I will take this information with great appreciation.
In terms of a camera, I've read that CCD monochrome cameras are the best. How does a DSLR rank against this though?
In terms of a telescope, should I be looking at one with a specific aperture range? If so, are there any other properties I should be looking at?
Is a grating better than a prism? Why?
What software is the most effective and easiest to use?
Do I need some sort of focusing device?
2. How do you collect spectral data using the technology?
Is it as simple as pointing at a star and recording the acquired data?
How long should I view the chosen star? Is it a photo or a video?
I would assume that these questions have been asked plenty of times, so any links to other forums which discuss the same questions and topics I am raising will be very helpful as well.
Any type of reply is welcome. As an amateur, anything is helpful.
Looking forward to discussing this with you all.